CN206211260U - A kind of laser polarization control module - Google Patents
A kind of laser polarization control module Download PDFInfo
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- CN206211260U CN206211260U CN201620906677.6U CN201620906677U CN206211260U CN 206211260 U CN206211260 U CN 206211260U CN 201620906677 U CN201620906677 U CN 201620906677U CN 206211260 U CN206211260 U CN 206211260U
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Abstract
The utility model belongs to laser technology field, discloses a kind of laser polarization control module, including：Devating prism, receives the laser, and laser is converted into linearly polarized light；Half-wave plate, realizes that half-wave plate specified angle rotates, the polarization direction for changing linearly polarized light by electronic rotation mirror holder；First quarter wave plate, motorized precision translation stage controls the first quarter wave plate into and out light path, for the linearly polarized light changed behind polarization direction to be converted into circularly polarized light；Control unit, is connected with electronic rotation mirror holder, motorized precision translation stage, and controls electronic rotation mirror holder, motorized precision translation stage to move.The utility model solves in the prior art that manually regulation optical element changes laser polarization state, required time is more long, poor repeatability, operator is required it is high, be not suitable for the problem that is used in instrument.Reach laser polarization state to automatically control, quick, the accurate, effect that repeatability is high, simple to operate.
Description
Technical field
The utility model is related to laser technology field, more particularly to a kind of laser polarization control module.
Background technology
It is the key successfully realized to the precise control of incident light polarization state in the application using Polarization-Sensitive characteristic,
Many situations also require that incident light polarization state can change according to demand, and current people are mainly by the manual regulation of optical element
Realize, the fine process such as polarization direction determination are needed in regulation, and required time is more long, and requires that operator has certain optics
Experimental skill, is not suitable for being used in instrument.
Utility model content
The embodiment of the present application is solved and manually adjusted in the prior art by providing a kind of laser polarization control module
Optical element changes laser polarization state, required time is more long, poor repeatability, operator is required it is high, be not suitable for being adopted in instrument
Problem.
The embodiment of the present application provides a kind of laser polarization control module, and laser is from the side of the laser polarization control module
Incidence, the laser polarization control module includes：Devating prism, the devating prism receives the laser, and by the laser
It is converted into linearly polarized light；Half-wave plate, the half-wave plate is arranged on electronic rotation mirror holder, is realized by the electronic rotation mirror holder
The half-wave plate specified angle rotation；The half-wave plate is used to change the polarization direction of the linearly polarized light；First quarter wave plate,
First quarter wave plate is arranged on motorized precision translation stage, the motorized precision translation stage control first quarter wave plate into and out
Light path；When first quarter wave plate moves into light path, first quarter wave plate is used for described in behind the change polarization direction
Linearly polarized light is converted into circularly polarized light；Control unit, described control unit and the electronic rotation mirror holder, the motorized precision translation stage
Connection, and control the electronic rotation mirror holder, the motorized precision translation stage to move.
Preferably, first quarter wave plate and the angle of optical axis are 45 °.
Preferably, the optical axis direction of the devating prism is consistent with the polarization direction of the laser.
Preferably, when the laser is circularly polarized light, it is configured with the second quarter wave plate before the devating prism, described the
Two quarter wave plates are used to for the laser to be converted into linearly polarized light.
It is preferred, it is necessary to when exporting left-handed rotatory polarization, when the linearly polarized light is the p light time：By the half-wave plate set to
0 °, first quarter wave plate is moved into light path；When the linearly polarized light is the s light time：The half-wave plate is set to π/4, by institute
State the first quarter wave plate and move into light path.
It is preferred, it is necessary to when exporting dextrorotation rotatory polarization, when the linearly polarized light is the p light time：By the half-wave plate set to
π/4, light path is moved into by first quarter wave plate；When the linearly polarized light is the s light time：The half-wave plate is set to 0 °, by institute
State the first quarter wave plate and move into light path.
Preferably, it is necessary to export the p light time, when the linearly polarized light is the p light time：The half-wave plate is set to 0 °, by institute
State the first quarter wave plate and remove light path；When the linearly polarized light is the s light time：The half-wave plate is set to π/4, by described first
Quarter wave plate removes light path.
Preferably, it is necessary to export the s light time, when the linearly polarized light is the p light time：The half-wave plate is set to π/4, by institute
State the first quarter wave plate and remove light path；When the linearly polarized light is the s light time：The half-wave plate is set to 0 °, by the described 1st
4 wave plates remove light path.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
In the embodiment of the present application, electronic rotation mirror holder, motorized precision translation stage are combined with optical element, realize that laser is inclined
Automatically controlling for polarization state, has the advantages that quick, accurate, repeated high, simple to operate.
Further, in the embodiment of the present application, laser polarization control module compact conformation, can apply to any needs and change
In the instrument of change laser polarization state.
Further, in the embodiment of the present application, the optical axis direction of devating prism is consistent with laser polarization direction, can be effective
Reduce the loss of luminous power in module.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the present embodiment, embodiment will be described below needed for be used
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are one embodiment of the present utility model, for this
For the those of ordinary skill of field, on the premise of not paying creative work, can also obtain other according to these accompanying drawings
Accompanying drawing.
A kind of structural representation of laser polarization control module that Fig. 1 is provided for the utility model embodiment.
Wherein, 1- devating prisms, 2- half-wave plates, the quarter wave plates of 3- first, 4- electronic rotations mirror holder, 5- motorized precision translation stages.
Specific embodiment
The embodiment of the present application is solved and manually adjusted in the prior art by providing a kind of laser polarization control module
Optical element changes laser polarization state, required time is more long, poor repeatability, operator is required it is high, be not suitable for being adopted in instrument
Problem.
The technical scheme of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows：
A kind of laser polarization control module, laser is incident from the side of the laser polarization control module, and the laser is inclined
Control module of shaking includes：Devating prism, the devating prism receives the laser, and the laser is converted into linearly polarized light；
Half-wave plate, the half-wave plate is arranged on electronic rotation mirror holder, realizes that the half-wave plate is specified by the electronic rotation mirror holder
Angle rotates；The half-wave plate is used to change the polarization direction of the linearly polarized light；First quarter wave plate, first quarter wave plate
On motorized precision translation stage, the motorized precision translation stage controls first quarter wave plate into and out light path；Described 1st
When 4 wave plates move into light path, first quarter wave plate is used to for the linearly polarized light behind the change polarization direction to be converted into circle
Polarised light；Control unit, described control unit is connected with the electronic rotation mirror holder, the motorized precision translation stage, and controls described
Electronic rotation mirror holder, motorized precision translation stage motion.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
As shown in figure 1, a kind of laser polarization control module is present embodiments provided, including：Devating prism 1；Half-wave plate 2,
The half-wave plate 2 is arranged on electronic rotation mirror holder 4, and the specified angle of the half-wave plate 2 is realized by the electronic rotation mirror holder 4
Rotation；First quarter wave plate 3, first quarter wave plate 3 is arranged on motorized precision translation stage 5, and the motorized precision translation stage 5 controls described
First quarter wave plate 3 is into and out light path.
Control unit, described control unit is connected with the electronic rotation mirror holder 4, the motorized precision translation stage 5, and controls institute
Electronic rotation mirror holder 4, the motorized precision translation stage 5 is stated to move.
First quarter wave plate 3 is 45 ° with the angle of optical axis.
The optical axis direction of the devating prism 1 is consistent with the polarization direction of the laser.
Laser is incident from the side of the laser polarization control module, and by devating prism 1, the devating prism 1 is by institute
State laser and be converted into linearly polarized light.
The linearly polarized light changes the polarization direction of the linearly polarized light by the half-wave plate 2, the half-wave plate 2.
When first quarter wave plate 3 moves into light path, first quarter wave plate 3 is by described in behind the change polarization direction
Linearly polarized light is converted into circularly polarized light.
When first quarter wave plate 3 removes light path, any change is not carried out to light beam.
If additionally, when the laser is circularly polarized light, be configured with the second quarter wave plate before the devating prism 1, described the
Two quarter wave plates are used to for the laser to be converted into linearly polarized light.
Outgoing polarization state is determined by each optical element in the polarization state and laser polarization control module of linearly polarized light.Pin
To different outgoing polarization state demands, according to the polarization state of different linearly polarized lights, the regulation phase of laser polarization control module
Answer otherwise varied, enumerated below：
(1) when needing to export left-handed rotatory polarization,
When the linearly polarized light is the p light time：The half-wave plate is set to 0 °, first quarter wave plate is moved into light path；
When the linearly polarized light is the s light time：The half-wave plate is set to π/4, first quarter wave plate is moved into light
Road.
(2) when needing output dextrorotation rotatory polarization,
When the linearly polarized light is the p light time：The half-wave plate is set to π/4, first quarter wave plate is moved into light
Road；
When the linearly polarized light is the s light time：The half-wave plate is set to 0 °, first quarter wave plate is moved into light path.
(3) need to export the p light time,
When the linearly polarized light is the p light time：The half-wave plate is set to 0 °, first quarter wave plate is removed into light path；
When the linearly polarized light is the s light time：The half-wave plate is set to π/4, first quarter wave plate is removed into light
Road.
(4) need to export the s light time,
When the linearly polarized light is the p light time：The half-wave plate is set to π/4, first quarter wave plate is removed into light
Road；
When the linearly polarized light is the s light time：The half-wave plate is set to 0 °, first quarter wave plate is removed into light path.
The present embodiment can be realized exporting being switched fast for polarization state p light, s light and circular polarization state, and regulation process is only needed
Corresponding instruction is sent according to demand in integrated software, control the rotation of electronic rotation mirror holder and the translation of motorized precision translation stage,
People is not needed to adjust manually.Electronic rotation mirror holder, motorized precision translation stage are combined with optical element, realize laser polarization state from
Dynamic control, has the advantages that quick, accurate, repeated high, simple to operate.And laser polarization control module compact conformation, can answer
With to arbitrarily need change laser polarization state instrument in.Additionally, the optical axis direction of devating prism is consistent with laser polarization direction,
The loss of luminous power in module can effectively be reduced.
A kind of laser polarization control module that the utility model embodiment is provided at least includes following technique effect：
1st, in the embodiment of the present application, electronic rotation mirror holder, motorized precision translation stage are combined with optical element, realize laser
Automatically controlling for polarization state, has the advantages that quick, accurate, repeated high, simple to operate.
2nd, in the embodiment of the present application, laser polarization control module compact conformation, can apply to any needs to change laser
In the instrument of polarization state.
3rd, in the embodiment of the present application, the optical axis direction of devating prism is consistent with laser polarization direction, can effectively reduce mould
The loss of luminous power in block.
It should be noted last that, above specific embodiment is only used to illustrate the technical solution of the utility model rather than limit
System, although being described in detail to the utility model with reference to example, it will be understood by those within the art that, can be right
The technical solution of the utility model is modified or equivalent, without deviating from the spirit and model of technical solutions of the utility model
Enclose, it all should cover in the middle of right of the present utility model.
Claims (8)
1. a kind of laser polarization control module, laser is incident from the side of the laser polarization control module, it is characterised in that institute
Stating laser polarization control module includes：
Devating prism, the devating prism receives the laser, and the laser is converted into linearly polarized light；
Half-wave plate, the half-wave plate is arranged on electronic rotation mirror holder, and the half-wave plate is realized by the electronic rotation mirror holder
Specified angle rotates；The half-wave plate is used to change the polarization direction of the linearly polarized light；
First quarter wave plate, first quarter wave plate is arranged on motorized precision translation stage, the motorized precision translation stage control described first
Quarter wave plate is into and out light path；When first quarter wave plate moves into light path, first quarter wave plate is used for the change
The linearly polarized light behind polarization direction is converted into circularly polarized light；
Control unit, described control unit is connected with the electronic rotation mirror holder, the motorized precision translation stage, and controls described electronic
Rotation mirror holder, motorized precision translation stage motion.
2. laser polarization control module as claimed in claim 1, it is characterised in that the folder of first quarter wave plate and optical axis
Angle is 45 °.
3. laser polarization control module as claimed in claim 1, it is characterised in that the optical axis direction of the devating prism and institute
The polarization direction for stating laser is consistent.
4. laser polarization control module as claimed in claim 3, it is characterised in that when the laser is circularly polarized light, in institute
The second quarter wave plate is configured with before stating devating prism, second quarter wave plate is used to for the laser to be converted into linearly polarized light.
5. laser polarization control module as claimed in claim 1, it is characterised in that when needing to export left-handed rotatory polarization,
When the linearly polarized light is the p light time：The half-wave plate is set to 0 °, first quarter wave plate is moved into light path；
When the linearly polarized light is the s light time：The half-wave plate is set to π/4, first quarter wave plate is moved into light path.
6. laser polarization control module as claimed in claim 1, it is characterised in that when needing output dextrorotation rotatory polarization,
When the linearly polarized light is the p light time：The half-wave plate is set to π/4, first quarter wave plate is moved into light path；
When the linearly polarized light is the s light time：The half-wave plate is set to 0 °, first quarter wave plate is moved into light path.
7. laser polarization control module as claimed in claim 1, it is characterised in that need to export the p light time,
When the linearly polarized light is the p light time：The half-wave plate is set to 0 °, first quarter wave plate is removed into light path；
When the linearly polarized light is the s light time：The half-wave plate is set to π/4, first quarter wave plate is removed into light path.
8. laser polarization control module as claimed in claim 1, it is characterised in that need to export the s light time,
When the linearly polarized light is the p light time：The half-wave plate is set to π/4, first quarter wave plate is removed into light path；
When the linearly polarized light is the s light time：The half-wave plate is set to 0 °, first quarter wave plate is removed into light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620906677.6U CN206211260U (en) | 2016-08-18 | 2016-08-18 | A kind of laser polarization control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620906677.6U CN206211260U (en) | 2016-08-18 | 2016-08-18 | A kind of laser polarization control module |
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| CN206211260U true CN206211260U (en) | 2017-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022193678A1 (en) * | 2021-03-19 | 2022-09-22 | 哈尔滨工业大学 | Femtosecond laser additive/subtractive machining system and machining method |
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2016
- 2016-08-18 CN CN201620906677.6U patent/CN206211260U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022193678A1 (en) * | 2021-03-19 | 2022-09-22 | 哈尔滨工业大学 | Femtosecond laser additive/subtractive machining system and machining method |
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